Percutaneous Repair of Chronic Aortic Pseudoaneurysm: A Single-Center Experience

Aortic pseudoaneurysm (AP) is a late complication of aortic repair that, without intervention, carries a high mortality rate. Surgical repair has significant in-hospital mortality and high health care costs. Endovascular stent grafting use is currently limited to branch-free aortic segments or the use of complex fenestrated devices. Our objective was to review the literature and share our institution's experience with AP percutaneous closure by vascular plugs and occluder technology.

We retrospectively reviewed percutaneous AP closure cases published in the literature (2005-2016) and from our institution (2017-2019). The follow-up strategy in our institution group was up to the discretion of the performing physician. We measured the procedure's safety, complications, and follow-up outcomes.

We found 40 cases in the literature and 10 at our institution. The procedural success rate was 90% in the literature and 100% in our group. Our group's average length of stay was 1.9 days with no observed major procedural complications. The literature's follow-up was generally limited to the hospitalization period. Our patients had a median follow-up time of 12 months (range 3-47 months). Late follow-up of AP demonstrated that sac size remained stable or reduced in 6 patients, but a size increase was observed in 4 patients requiring surgical intervention. Death from nonprocedure-related complications occurred in 40% of our patients. The cost per procedure was hypothetically less than for performing open surgical repair.

Our experience shows a viable option for percutaneous AP repair, given its initial safety and cost-effectiveness. Our experience highlights the critical role of follow-up imaging in identifying AP expansion and the need for further intervention. The high nonaorta-related mortality seen in follow-up emphasizes the high-risk nature of the population due to comorbidities.